Publication detail
Influence of Loading Cycle Asymmetry on Fatigue Properties of Nodular Cast Iron
HANZLÍKOVÁ, K. VĚCHET, S. KOHOUT, J.
Czech title
Vliv asymetrie cyklu na únavové vlastnosti litiny s kuličkovým grafitem
English title
Influence of Loading Cycle Asymmetry on Fatigue Properties of Nodular Cast Iron
Type
conference paper
Language
en
Original abstract
The purpose of submitted work is completion pieces of knowledge about loading cycle assymetry’s influence on fatigue properties isothermaly heat traeted ball gaphitic structured cast iron. Most ofen, fatigue tests for fatigue limit determination are performed on symetrical load cycle. But value of fatigue limit is asymmetry’s cycle function and for different types of loading cycles increases or decreases according to size and sign of statical pre-load. To obtain good fatigue material behaviour conception it is necessary to set several Wöhler curves with different cycle asymmetry and construct limit-value diagram chart – Smith diagram or amplitude-limit diagram chart – Haigh diagram. Both diagram charts represent relationship between fatigue limit values for various asymetry cycle types
Czech abstract
Cílem této práce bylo doplnit poznatky o vlivu asymetrie cyklu na únavové vlastnosti izotermicky zušlechtěné litiny s kuličkovým grafitem. Zkoušky na zjištění meze únavy se nejčastěji provádění při symetrickém zatížení. Hodnota meze únavy je však funkcí asymetrie cyklu a pro různé druhy zatížení stoupá nebo klesá podle znaménka statického předpětí. Pro získání dobré představy o únavovém chování materiálů je potřeba sestrojit Smithův nebo Haighův diagram. Oba tyto diagramy popisují závislost mezi mezemi úavy pro jednotlivé druhy zatížení.
English abstract
The purpose of submitted work is completion pieces of knowledge about loading cycle assymetry’s influence on fatigue properties isothermaly heat traeted ball gaphitic structured cast iron. Most ofen, fatigue tests for fatigue limit determination are performed on symetrical load cycle. But value of fatigue limit is asymmetry’s cycle function and for different types of loading cycles increases or decreases according to size and sign of statical pre-load. To obtain good fatigue material behaviour conception it is necessary to set several Wöhler curves with different cycle asymmetry and construct limit-value diagram chart – Smith diagram or amplitude-limit diagram chart – Haigh diagram. Both diagram charts represent relationship between fatigue limit values for various asymetry cycle types
Keywords in English
fatiguge properties, ADI, fatigue limit, loading cycle asymmetry
Released
23.06.2003
Location
Slovenská republika
ISBN
80-8070-084-2
Book
Transcom 2003
Pages count
4
BIBTEX
@inproceedings{BUT17749,
author="Klára {Hanzlíková} and Stanislav {Věchet} and Jan {Kohout},
title="Influence of Loading Cycle Asymmetry on Fatigue Properties of Nodular Cast Iron",
booktitle="Transcom 2003",
year="2003",
month="June",
address="Slovenská republika",
isbn="80-8070-084-2"
}